TM 11-235 Radio Sets SCR-536-A, -B, -C, -D, -E, and -F. 1945-05-31
"Radio Set SCR-536-A, -B, -C, -D, -E, or -F consists of a five-tube, low-power, dry-battery-operated radio receiver and transmitter, and certain accessories. It is designed for amplitude-modulated, two-way communication over short distances. The outstanding feature of its design and construction is its extreme portability. It is intended primarily as a handietalkie for foot combat troops."
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"Supersedes TM 11-235, 14 May 1943, including C 1, 15 December 1943, C 2, 18 October 1944; TB 11-235-1, 31 May 1944; TB 11-235-2, 22 July 1944; TB 11-235-3, 8 August 1944; TB 11-235-4, 11 August 1944; TB 11-235-5, 16 September 1944; TB 11-235-6, 14 November 1944; TB 11-235-7, November 1944; and TB 11-235-8, 25 January 1945."